Afraid I am a rabid caffeine addict but a friend gave up coffee a few years ago.

She changed having a coffee to having a cup of hot water. If she really didn't feel like water, she would have a 1/4 cup of orange juice topped up with 3/4 cup of hot water. Sounds gross to me but it worked for her. Also having a hot milk at a time you would normally have a coffee is an option too.